Question about Ruud Handler Air Conditioner

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Heater work when switch to fan on but doesnt work when swithed to auto but the ac works on auto or on, conufused please help

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  • tuff1083 Dec 19, 2007

    it does make he but its as you said only after the delay relay clicks. It blow heat until it hits the temp and then just continues to blow air no more heat. yes there is a jumper wire from the rc to rh

  • tuff1083 Dec 20, 2007

    ok ill try that thank you and that could solve the problem even when fan is switched to auto.

  • madloser Apr 23, 2008

    mine is only a heater model#UGUC-09EA about 25 years old and my unit heats great but when it reaches temp the fan continous to run and must be unpluged to turn off thermo is fine,

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When switched to on does it make heat or is ir just the fan blowing? Take the first cover off the thermostat and see if there is a jumper wire from RC to RH. If not you need to add one. Also, the heat doesn't come on instantly like the A/C, it takes a couple of minutes for the pilot to lite, the burners to come on and then the time/temp delay relay will click on the fan motor, this may take a few minutes.

Posted on Dec 19, 2007

  • Rob Luna
    Rob Luna Dec 20, 2007

    If you are getting burners and then fan, then when it makes the set temperature set on the thermostat, all is working properly. The fan will continue to blow after the burners go out because of the time/remp. delay relay. If the burners are cutting out before the desired temp. is reached, then it is either the aforementioned relay or the safety roll out switch. An easy way to check them is to by-pass them i.e.; connect the wires together, see if it changes anything. Also some thermal discs (the safety switch) will have a re-set tab on it.

  • Rob Luna
    Rob Luna Dec 20, 2007

    YES, the fan needs to be switched to auto, if not, on some models it will by-pass the other functions of the system altogether.

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